Dtc 9-2 (Iat Sensor High Voltage) - Honda NSA700A DN-1 2009 Service Manual

DTC 9-2 (IAT SENSOR HIGH VOLTAGE)

• Before starting the inspection, check fo r loose or
poor contact on the IAT sensor connector and
recheck the DTC.
1. IAT Sensor System Inspection
Turn the ignition sw itch ON and engine stop
sw itch " O
Check the IAT sensor w ith the HDS pocket tester.
Is a b o u t 5 V in d ic a te d ?
YES - G O TO STEP 2.
NO - • Interm ittent failure
• Loose or p o o r contact on the IAT
sensor connector
2. IAT Sensor Inspection
Turn the ign tio n sw itch OFF.
Remove the center cow l (page 3-6).
Disconnect the IAT sensor 2P (Gray) connecto-.
Connect the IAT sensor te rm in a ls w ith a ju m p er
w ire.
Connection: Gray/blue - Green/orange
Turn the ignition sw itch ON and engine stop
sw itch " Q ".
Check the IAT sensor w ith the HDS pocket tester.
Is a b o u t 0 V indicated?
YES - Faulty IAT sensor
NO - G O TO STEP 3.
3. IAT Sensor Output Line Inspection
Disconnect the ECM 33P connectors.
Check fo r co n tin u ity at the G ray/blue and Green/
orange w ire between the IAT sensor 2P (Gray)
connector term inals and the ECM 33P connec­
tors.
CONNECTION: B29 - Gray/blue
A18 - Green/orange
TOOL:
Test probe
Is there co n tin u ity?
YES - Replace the ECM w ith a know n good
one, and recheck.
NO - • Open circuit in G ray/blue w ire
• Open circuit in G reen/orange w ire
IAT SENSOR 2P
(GRAY) CONNECTOR
(W ire side o f fem ale
term inal)
07ZAJ-RDJA110
FUEL SYSTEM (PGM-FI)
ECM 33P (LIGHT
GRAY)
CONNECTOR (W ire
side o f fem ale
term inal)
)
;
Gr/Bu
r
I
ECM 33P (BLACK) CONNECTOR
(W ire side o f fem ale term inal)
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